You're an idiot if you think that someone cutting you off is justified by pulling a gun, especially if the person with the gun escalates the verbal argument.

OP: Too bad you didn't get his license plate number and get him thrown in jail for being an idiot. Perfect example of why some gun control is justified, as the least common denominator shouldn't be allowed to own a deadly weapon. Hopefully for his sake he doesn't do something that stupid to someone else who is packing, or the situation could become tragic very quickly. Perfect example of why I just keep to myself if something like this happens. Been on the receiving end of people getting out of cars, etc. to yell at me and realized very quickly it's not worth getting hurt over, especially moving from the north down here to VA.